blue urine from food
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blue urine from food  
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1.  Big Rick  
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 More options Nov 30 1990, 6:26 pm
Newsgroups: rec.food.cooking
From: r...@hpctdpa.HP.COM (Big Rick)
Date: 30 Nov 90 22:26:52 GMT
Local: Fri, Nov 30 1990 6:26 pm
Subject: Re: blue urine from food
/ hpctdpa:rec.food.cooking / wjwh...@well.sf.ca.us (Bill White) / 11:35 pm  Nov 28, 1990 /

>I'm surprised I haven't seen anyone comment on the OTHER effect of diet on
>urine: namely, asparagus.  I'm not sure of the biomedical logistics, but I know
>from experience that some of us have a problem digesting that wonderful, lovely,
>fruit-of-the-earth, on account of the dreadful odor it imparts to one's urine.
>I'm told this effect is harmless, that it is genetic and results from the
>inability of some people to produce a certain enzyme (l-asparaginase, if I
>remember rightly).

Asparagus is toxic.  Yes, really!  However, humans eat it in small enough
quantities as to be harmless.  I believe that is the smell you speak of,
your body getting rid of the toxins.  I don't remember just what the    
chemical is, but I don't think it has anything to do with genetics...
it is the poison in it.

Rick


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2.  Larry Lippman  
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 More options Dec 1 1990, 12:57 pm
Newsgroups: sci.bio, rec.food.cooking
From: la...@kitty.UUCP (Larry Lippman)
Date: 1 Dec 90 16:57:18 GMT
Local: Sat, Dec 1 1990 12:57 pm
Subject: Re: blue urine from food

In article <21...@well.sf.ca.us>, wjwh...@well.sf.ca.us (Bill White) writes:
> I'm surprised I haven't seen anyone comment on the OTHER effect of diet on
> urine: namely, asparagus.  I'm not sure of the biomedical logistics, but I
> know from experience that some of us have a problem digesting that wonderful,
> lovely, fruit-of-the-earth, on account of the dreadful odor it imparts
> to one's urine.  I'm told this effect is harmless, that it is genetic and
> results from the inability of some people to produce a certain enzyme
> (l-asparaginase, if I remember rightly).

> I'd almost be curious to take a poll here of how many of us know just what I'm
> talking about and how many don't and I'd appreciate a more detailed explana-
> tion of this phenomenon from the medical types amongst us.

        I do know what you are referring to, but in an indirect manner
as related by others.  Since I do not eat asparagus, I have no firsthand
knowledge of the "effect".  :-)

        The odor-producing substances excreted in the urine are believed to
be a mixture of methanethiol (similar to ethanethiol, used as an odorizer
for natural gas) and an amine derived from asparagine and succinic acid.

         I believe that the precursor of the odor-producing substances
found in asparagus is not the amino acid asparagine per se, but is some
thio derivative of the amino acid methionine.  There have been papers
written on this topic (check Index Medicus), but I have not read them.

Larry Lippman @ Recognition Research Corp.  "Have you hugged your cat today?"
VOICE: 716/688-1231   {boulder, rutgers, watmath}!ub!kitty!larry
FAX:   716/741-9635                  {utzoo, uunet}!/      \aerion!larry


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3.  Trouble  
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 More options Dec 10 1990, 9:41 am
Newsgroups: sci.bio, rec.food.cooking
From: r...@beach.cis.ufl.edu (Trouble)
Date: 10 Dec 90 07:01:04 GMT
Local: Mon, Dec 10 1990 3:01 am
Subject: Re: blue urine from food

In article <4...@kitty.UUCP> la...@kitty.UUCP (Larry Lippman) writes:
>In article <21...@well.sf.ca.us>, wjwh...@well.sf.ca.us (Bill White) writes:
>> to one's urine.  I'm told this effect is harmless, that it is genetic and
>> results from the inability of some people to produce a certain enzyme
>> (l-asparaginase, if I remember rightly).

I recall reading somewhere (how wonderfully specific of me, huh?!) that
the speed with which this effect is noticed is indicative of how well
your kidneys are working.  That is, if your kidneys are working well,
you'll notice the smell very quickly.

>> I'd almost be curious to take a poll here of how many of us know just what I'm
>> talking about and how many don't and I'd appreciate a more detailed explana-

Anybody else notice this effect from tomato-based spaghetti sauce?

Bob

--
r...@beach.cis.ufl.edu                                           Air:  PP-SEL
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4.  David A Rasmussen  
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 More options Dec 5 1990, 11:35 am
Newsgroups: sci.bio, rec.food.cooking
Followup-To: sci.bio
From: d...@convex.csd.uwm.edu (David A Rasmussen)
Date: 5 Dec 90 01:03:05 GMT
Local: Tues, Dec 4 1990 9:03 pm
Subject: Re: blue urine from food
From article <21...@well.sf.ca.us>, by wjwh...@well.sf.ca.us (Bill White):

> I'd almost be curious to take a poll here of how many of us

get asparagus urine. Ok, put me down for a yes.

Speaking of blue urine, if you eat enough blueberries, does the other human
waste turn a shade of blue as well?

--
Dave Rasmussen - Systems Programmer/Manager, UW-Milwaukee Computing Svcs Div.
Internet:d...@uwm.edu, Uucp:uwm!dave, Bitnet:dave%uwm.edu@INTERBIT
AT&T:414-229-5133 USmail:Box 413 EMS380,Milwaukee,WI 53201


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5.  Gretchen Miller  
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 More options Dec 6 1990, 6:53 pm
Newsgroups: rec.food.cooking, sci.bio
From: g...@andrew.cmu.edu (Gretchen Miller)
Date: 6 Dec 90 22:53:16 GMT
Local: Thurs, Dec 6 1990 6:53 pm
Subject: Re: blue urine from food

>Speaking of blue urine, if you eat enough blueberries, does the other human
>waste turn a shade of blue as well?

I don't know about blueberries, but beets will turn both types of waste
a rusty red.

gretchen miller
g...@andrew.cmu.edu


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An authentic tamale procedure  
1.  Ed Gould  
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 More options Nov 30 1990, 9:14 pm
Newsgroups: rec.food.cooking
From: e...@mtxinu.COM (Ed Gould)
Date: 1 Dec 90 01:14:45 GMT
Local: Fri, Nov 30 1990 9:14 pm
Subject: Re: An authentic tamale procedure
regarding dough for tamales:

>We went to the store and bought the basic dough consisting of the corn
>flour, water, and lime.  It was about the consistancy of play dough
>and came in 3-5 lb packages.  I asked how much lime was used and
>they didn't know.  I believe it's added in very small quantities
>as a preservative and I wouldn't add it if I were making the dough
>from scratch and was going to use it right away.  Mixing corn flour
>with water will give you the basic dough.

Processing corn with lime is an essential part of making masa harina,
the corn flour used in this preparation.  It may or may not be a
preservatice - I don't know - but it is an essential part or the
processing and an important element of the flavor.  The lime is
a large part of the flavor diffrerence between "corn bread" and
"tortillas," both of which are bread items made with corn.

--
Ed Gould                    mt Xinu, 2560 Ninth St., Berkeley, CA  94710  USA
e...@mtxinu.COM                  +1 415 644 0146

"I'll fight them as a woman, not a lady.  I'll fight them as an engineer."


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Nutra Sweet?  
2.  Miles Bader  
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 More options Nov 30 1990, 11:02 pm
Newsgroups: rec.food.veg, sci.med, rec.food.cooking
From: bad...@andrew.cmu.edu (Miles Bader)
Date: 1 Dec 90 03:02:09 GMT
Local: Fri, Nov 30 1990 11:02 pm
Subject: Re: Nutra Sweet?
I avoid it because everything using seems to aquire a really disgusting slimy
texture.  I also don't like the taste ("sweet?").

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3.  dalrymd  
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 More options Dec 1 1990, 2:30 am
Newsgroups: rec.food.cooking
From: dalr...@yoda.byu.edu
Date: 1 Dec 90 06:30:37 GMT
Local: Sat, Dec 1 1990 2:30 am
Subject: Re: Nutra Sweet?
About studies on headache symptoms-- I've heard from one of my professors that
Utah State University was working on one, but that's all I've heard.

About the safety of nutrasweet in pregnancy-- it is probably only going to be a
problem if you have PKU-- a metabolic disorder, and the chances say that your
baby will have it too.  But, again, if it bothers you with headaches and such,
I wouldn't think it would be too smart or fun during pregnancy.

As for the caloric content-- yes, a teaspoon of sugar only has 15 kcal, but do
you realize how many teasoons are in one cup of a soft drink?  100 Kcals worth!
There is also a problem if you have a problem with sugar metabolism-- like
Diabetes Mellitus or hypo glycemia.  Would YOU want to give up sugar?  Neither
would I, but people with these disorder often have to come close to that if
they want to st ay in good control of their blood sugar.  NutraSweet is the
best tasting substitute they'/ve come up with yet.  I think it is a great step
forward.

As for kids and NutraSweet, If you give them massive doses, they might have
some problems with headaches and such (or if they are super sensitive to the
different Amino Acid proportions in the blood).  Because kids need the
calories, I'd give mine sugar sweetened stuff because it is much cheaper (In
terms of Kool-aid type drinks), and there are less things to worry about.

Anyway, that's my 2 cents....from a future registered dietitian.

6trsmwppo


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Left handed sugar  
4.  Steve Dyer  
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 More options Dec 1 1990, 1:01 am
Newsgroups: rec.food.cooking
From: d...@spdcc.COM (Steve Dyer)
Date: 1 Dec 90 05:01:57 GMT
Local: Sat, Dec 1 1990 1:01 am
Subject: Re: Left handed sugar

In article <4...@dftsrv.gsfc.nasa.gov> xr...@amarna.gsfc.nasa.gov writes:
>The problem with left-handed sugar is precisely the same as its advantage -
>it cannot be digested.  In large quantities, it causes intestinal problems,
>especially diarrhea.

I think you're thinking of sorbitol and xylitol.  These aren't "left handed
sugars" in the sense that you're using that phrase.  On the other hand,
I wouldn't be at all surprised if L-glucose had similar laxative effects.
I don't know, however.

>Levulose (left-handed sugar) is used in some low-calorie mints where the
>amount consumed is small enough to not cause problems.  It just hasn't
>proved feasible for other purposes.

Levulose is a synonym for fructose.  It's not a "left handed sugar"
in the sense that you're using that.  It's digested just like glucose
or sucrose.

There is a misnomer here in that both D-glucose and D-fructose are
both levorotatory--solutions of same both rotate light to the left.
The "D" and "L" refer to absolute conformation, not the ability
to polarize light.

--
Steve Dyer
d...@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer
d...@arktouros.mit.edu, d...@hstbme.mit.edu


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Nutra Sweet?  
5.  Shankar Bhattacharyya  
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 More options Dec 1 1990, 10:49 am
Newsgroups: rec.food.cooking
From: sbhat...@sales.GBA.NYU.EDU (Shankar Bhattacharyya)
Date: 1 Dec 90 14:49:51 GMT
Local: Sat, Dec 1 1990 10:49 am
Subject: Re: Nutra Sweet?

In article <5...@spdcc.SPDCC.COM> d...@ursa-major.spdcc.com (Steve Dyer) writes:
>In article <1990Nov30.151234.2...@mtcchi.uucp> m...@mtcchi.uucp (2664-Marguerite T Czajka(Z550102)0000) writes:

About problems with aspartame...

>> My doctor said it has to do with
>>my body's inability to process something in aspertame (phenol... I forget
>>the word).
>Phenylalanine.  I doubt it's that simple.  If you had phenylketonuria
>you'd have problems with a lot more than Nutrasweet-containing foods.
>You'd have to follow a strict diet which was low in phenylalanine,
>which is rather hard since it's one of the component amino acids in
>proteins.

Do you know this to be the case? About the restricted diet, I mean.
I've wondered what phenylketonurics had to do about diet, but have never
bothered to find out. This is interesting.

>> So I avoid it, but it isn't easy since the food industry has
>>just gone nuts with this stuff!
>Isn't every food which contains Nutrasweet marked clearly as having it?

Yes. That's required. By law. And it is observed. What is more, the
manufacturer of Nutrasweet, now a division of Monsanto, I think, requires
that the swirling symbol also be exhibited. It is difficult to avoid seeing
it, at least in the US. Outside the US things may be different.

----------------------------------------------------------------------
Shankar Bhattacharyya, Information Systems, New York University
sbhat...@sales.gba.nyu.edu
----------------------------------------------------------------------


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